The study of moles is called Moleosophy.
The location of a mole, its size, shape and colour can be interpreted as indicators of your character, as well as generalities for the future. Twin moles could have yet another connotation.
Moleosophy, when co-related with interpretations of other psychic sciences, substantiates personality and character readings, and provides a complete view of the subject.
Location : Interpretation Arms Moles on the arms indicate that the person is polite, diligent and will lead a happy married life.If mole is near the elbow, the man will need to struggle in life, and might also become a young widower. If the woman has the same characteristics, however, her problems relate to her occupation.
Armpits A mole under the left arm is indicative of great struggle early in life, which is, however, well rewarded. Wealth makes later years equally pleasurable. A mole under the right arm shows that one needs to be alert and cautious in matters of security. Back People like this are unreliable, and with them one must ensure that all facts are available before one enters any sort of negotiation for any enterprise.
Breast A mole on the right breast is indicative of laziness, which may affect family life. You need to be assertive about your needs to be able to enjoy the love and comfort of the children. A mole on the left breast belongs to active and energetic people, who generally get what they want in life.
Buttocks People who have a mole on their buttocks are un-ambitious, and will be reconciled to any mode of living.
Cheek A mole on either cheek indicates a serious and studious person who has no interest in material pleasures.
Chin A mole on either side of the chin is indicative of people who are affectionate and caring. These people adapt easily to any situation. They love travelling and respect the law of the land. They are also dedicated and conscientious workers and willingly accept responsibilities.
Ear People who are born with a mole on their ear are generally considered lucky.
Elbow People who have moles on their elbow love to travel. They are adventurous and spirited.
Eye If the mole is located on the outer corner of the eye, this indicates that the person is honest, reliable and forthright.
Eyebrow If a mole is located on the right eyebrow, it signifies that these people will have a highly active life and will be successful in all ventures.
Finger People who have a mole on any finger turn out to be dishonest and tend to grossly exaggerate.
Foot People with a mole on their foot are easy going and laid back. They need to exercise to stay healthy.
Forehead People who have a mole on their forehead will be prosperous and well settled in life.
Hand Those people who have a mole on their hand are talented and make a success of their lives.
Heel People who possess a mole on their heel make enemies easily and are prone to losing friends.
Hip A mole on any part of the hip except the buttocks signifies that these people are contented, resilient and spirited.
Knee If you have a mole on your right knee, it implies that you are a friendly person. A mole on the left knee signifies that these people lead an extravagant lifestyle.
Lips People with a mole on their lips always aspire to get ahead in life.
Naval A man who has a mole on his navel will be lucky in life and a woman who has the same desires children.
Neck If the mole is on the front of the neck, it signifies unexpected good fortune. If it is on either side of the neck, it indicates an unreasonable temperament. A mole on the back of the neck indicates a person’s desire to lead a simple life.
Nipple If a man has a mole on his nipple, it indicates a fickle nature. If a woman has a mole on her nipple, it indicates that she is striving for social status.
Nose A mole on the nose belongs to a person who will be a sincere friend and a hard-working individual.
Shoulder A mole on the right shoulder indicates a sensible, industrious individual.
Wrist A mole on the wrist indicates that the person is frugal, ingenious and dependable.
more at http://www.citehr.com/3841-mole-theory.html#ixzz1At2wEDvg